This circuit operates at a voltage of 1.3 V from a single mercury cell. We found in an old documentation and for the components used the frequency is 500 kHz.
September 2016 - Mouser Electronics is already providing the QorIQ LS1012A from NXP, a processor...
The normal use of a 4520 as a divide-by-16 counter is shown in Figure bellow. In the normal...
This circuit was found in a 1991 publication. The transistor can be a general-purpose type....